Wall attachment



FIG. 1 is a left side view of a wall attachment, according to my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a right side top perspective view thereof. 

The ornamental design for a wall attachment, as shown and described. 